New research shows that air pollution wreaks not only your lungs but also damages key organs in your body - the brain, heart, kidneys, pancreas - apart from causing diabetes and cancer.

Indian cities are among the most polluted in the world. We have to clean the air around us urgently or suffer dire health consequences.

Raj Chengappa explains.

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Produced by Anna Priyadarshini

Sound mix by Kapil Dev Singh